A method for manufacturing a boron-doped high-entropy electrolytic cell anode

Abstract

This invention provides a method for fabricating a boron-doped high-entropy electrolyzer anode, relating to the field of anode fabrication technology. The method involves combining a high-entropy oxide containing five transition metal elements (iron, cobalt, nickel, vanadium, and chromium) with a boron source, synthesizing a boron-doped precursor via solvothermal synthesis in one step, and then annealing to synthesize a boron-doped high-entropy catalyst. The boron-doped high-entropy catalyst is then formulated into a slurry and uniformly coated onto a nickel felt substrate using a high-pressure gas-assisted spraying process. After isothermal drying, a dense catalytic layer is formed, ultimately yielding a composite high-entropy anode. Compared to traditional noble metal-based anodes, this invention significantly reduces the anode reaction overpotential through the coupling effect of the synergistic effect of high-entropy multi-metals and boron doping. This fabrication process combines material cost advantages with adaptability to large-scale production, providing an innovative solution for the efficient development of alkaline water electrolysis hydrogen production equipment.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of anode manufacturing, and particularly relates to a manufacturing method of a boron-doped high-entropy electrolytic cell anode. BACKGROUND

[0002] With the acceleration of global energy transformation, hydrogen energy, as a clean and efficient secondary energy, is showing a rapid growth trend in demand. As a representative of sustainable hydrogen production technology, water electrolysis is gradually becoming the focus of scientific research and industrialization. Among the many water electrolysis technologies, alkaline electrolytic cells are widely used in industrial production due to their maturity and reliability. However, the anode materials of existing alkaline electrolytic cells mostly rely on noble metal catalysts (such as RuO2, IrO2, etc.), which have significant limitations in cost, catalytic activity and long-term stability.

[0003] Specifically, although nickel-based catalysts are attracting attention due to their low cost, their electrolysis efficiency and stability still cannot meet actual demand; while noble metal catalysts perform well in performance, their high cost seriously restricts their large-scale promotion and application. Therefore, developing an anode material with low cost and high performance has become an important direction for the breakthrough development of alkaline electrolytic cell technology. This not only concerns the economic feasibility of the hydrogen energy industry, but also will directly affect the process and effectiveness of future energy transformation.

[0004] In recent years, with the rapid development of material science, high-entropy oxides (HEOs) have gradually become a research hotspot in the field of energy catalysis due to their unique multi-component synergistic effect and excellent physical and chemical stability. High-entropy oxides form a single solid solution phase structure by combining multiple metal oxides, utilizing the entropy stabilization effect, and exhibit excellent thermal stability, chemical corrosion resistance and mechanical strength. These characteristics enable them to perform significantly better in extreme environments, especially in the anode catalytic reaction of alkaline electrolytic cells, where high-entropy oxides are considered to have great application potential.

[0005] However, although high-entropy oxides exhibit certain catalytic activity and stability in theory and experiments, they still face many challenges in anode applications. First, the catalytic activity of existing high-entropy oxide catalysts is still insufficient to meet industrial demand, especially in terms of electrolysis efficiency and overpotential control at high current densities, which still has a lot of room for improvement. Second, the long-term stability of high-entropy oxides still needs to be further optimized, especially the structural stability under high alkaline environment and strong oxidation conditions has not been completely solved. In addition, existing preparation processes such as impregnation and sintering are difficult to achieve uniform distribution and efficient utilization of catalysts, resulting in insufficient exposure of active sites, which limits the full play of their catalytic performance.

[0006] To address the aforementioned issues, researchers are exploring various innovative preparation methods to significantly enhance the activity and stability of high-entropy oxide catalysts. For example, introducing highly active metal components (such as Ni, Fe, and Co) through doping or composite modification can effectively optimize the electronic structure of the catalyst, thereby improving its catalytic activity. Nanostructure design (such as nanoparticles, nanowires, and nanosheets) can significantly increase the number and exposure rate of active sites, while simultaneously enhancing the catalyst's resistance to aggregation. Furthermore, novel preparation processes such as co-precipitation, sol-gel methods, and atomic layer deposition (ALD) can achieve uniform distribution and precise control of the catalyst, thereby significantly improving its utilization and stability.

[0007] It is worth noting that the preparation cost and large-scale production of high-entropy oxides remain key bottlenecks restricting their commercial application. Currently, researchers are attempting to reduce the production cost of high-entropy oxides by selecting low-cost raw materials, simplifying preparation processes, and developing large-scale production technologies. For example, using industrial waste or inexpensive metal oxides as raw materials, combined with efficient synthesis methods, holds promise for achieving economical production of high-entropy oxides. In summary, developing a high-entropy oxide material and its preparation method that can significantly improve the activity and stability of anode catalysts while reducing production costs has become an important research direction for promoting the commercialization of alkaline electrolyzer technology. Summary of the Invention

[0008] In view of the above-mentioned prior art, the present invention proposes a method for fabricating a boron-doped high-entropy electrolytic cell anode.

[0009] The present invention provides a method for fabricating a boron-doped high-entropy electrolytic cell anode, comprising: synthesizing a boron-doped high-entropy catalyst in one step by solvothermal reaction of a metal salt containing five transition metal elements (iron, cobalt, nickel, vanadium, and chromium) and a boron source.

[0010] The boron-doped high-entropy catalyst was formulated into a slurry with a binder and a dispersant, and then uniformly coated onto the surface of a nickel felt substrate using a high-pressure gas-assisted spraying process. After constant-temperature drying, a dense catalytic layer was formed, and finally a composite high-entropy anode was obtained.

[0011] Preferably, the nickel felt substrate has a thickness of 0.1-0.3 mm and an area of ​​1-4 cm². 2 .

[0012] Preferably, the binder is Form B ionomer, and the mass percentage of Form B ionomer in the slurry is 20-30%.

[0013] Preferably, the dispersant is at least one of deionized water, ethanol, and isopropanol.

[0014] Preferably, the loading of the boron-doped high-entropy catalyst is 0.8-1.2 mg / cm³. 2 .

[0015] Preferably, the temperature for constant temperature drying is 60-90℃.

[0016] Preferably, in the spraying process, the nozzle diameter of the spraying equipment is 0.3 mm and the pressure is 0.4 MPa.

[0017] Preferably, the boron-doped high-entropy catalyst is prepared through the following steps:

[0018] Step 1: Disperse iron salt, cobalt salt, nickel salt, vanadium salt, chromium salt and boric acid in a fixed molar ratio in a mixed solvent of oleylamine and octadecene to obtain a mixed solution;

[0019] Step 2: After the mixed solution is heated by a program, the sample is washed with heptane and vacuum dried to obtain the precursor powder;

[0020] Step 3: Anneal the precursor powder in air to obtain a boron-doped high-entropy catalyst.

[0021] Preferably, the molar ratio of the iron salt, cobalt salt, nickel salt, vanadium salt, chromium salt and boric acid is 1:4:1:0.2:1:2; and the volume ratio of the oleylamine and octadecene is 1:2.

[0022] Preferably, the temperature of the heat treatment is 250-280℃ and the holding time is 1-2h; the vacuum drying time is 12-24h; and the annealing temperature is 350-450℃ and the time is 1.5-2h.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] This invention provides a method for fabricating a boron-doped high-entropy electrolytic cell anode. It utilizes high-entropy oxides composed of inexpensive transition metals such as iron, cobalt, nickel, vanadium, and chromium, doped with boron, as the main catalyst component, avoiding the high cost problem of traditional precious metal catalysts. Furthermore, the boron doping process is simple and inexpensive. Compared to traditional multi-stage synthesis processes, solvothermal synthesis occurs within a closed reaction system, allowing various reactants to fully contact, mix, and react under the medium of the solvent, achieving high-efficiency material conversion in a short time. All reaction steps are completed in the same system, with reactants uniformly dispersed in the solvent in molecular or ionic form. This ensures thorough mixing and interaction of boron with iron, cobalt, nickel, vanadium, chromium, and other metals at the atomic or molecular level. The resulting high-entropy oxide catalyst has a highly uniform microstructure and compositional distribution, ensuring the consistency and stability of catalyst performance. More importantly, it simplifies the entire fabrication process, making production easier to control and manage, and facilitating stable and uniform product output in large-scale industrial production.

[0025] Furthermore, this invention significantly improves the anodic activity and stability of the catalyst through boron doping technology. The introduction of boron optimizes the electronic structure of the catalyst, enhancing its catalytic activity for the anodic reaction and significantly improving electrolysis efficiency. Compared to traditional noble metal-based anodes, this invention significantly reduces the anodic reaction overpotential through the coupling effect of high-entropy multi-metal synergy and boron doping. This preparation process combines material cost advantages with adaptability to large-scale production, providing an innovative solution for the efficient development of alkaline water electrolysis hydrogen production equipment. Attached Figure Description

[0026] Figure 1 This is a transmission electron microscope image of the boron-doped high-entropy catalyst obtained in Example 1 of the present invention.

[0027] Figure 2 This is an X-ray diffraction pattern of the boron-doped high-entropy catalyst obtained in Example 1 of the present invention.

[0028] Figure 3 This is an X-ray photoelectron spectroscopy (XPS) image of the boron-doped high-entropy catalyst obtained in Example 1 of this invention.

[0029] Figure 4 This is a comparison chart of the performance test curves of the composite high-entropy anode obtained in Example 1 of the present invention and the commercial RuO2 anode.

[0030] Figure 5 This is a comparison chart of the performance test curves of the composite high-entropy anode obtained in Example 1 of the present invention and the commercial RuO2 anode assembled into an alkaline electrolyzer.

[0031] Figure 6 This is a physical illustration of the composite high-entropy anode obtained in Embodiment 1 of the present invention.

[0032] Figure 7 This is a comparison chart of the composite high-entropy anode obtained in Example 1 of the present invention and the anodes obtained in Comparative Examples 1-3.

[0033] Figure 8 This is a comparison chart of the performance test curves of the composite high-entropy anode obtained in Example 1 of the present invention and the anodes obtained in Comparative Examples 1-3 assembled into an alkaline electrolyzer. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific embodiments.

[0035] Example 1: A method for fabricating a boron-doped high-entropy electrolytic cell anode:

[0036] Preparation of boron-doped high-entropy catalysts:

[0037] Step 1: Weigh out 0.353g of iron acetylacetone (Fe(acac)3), 1.028g of cobalt acetylacetone (Co(acac)3), 0.257g of nickel acetylacetone (Ni(acac)2), 0.069g of vanadium acetylacetone (V(acac)2), and 0.349g of chromium acetylacetone (Cr(acac)3) in a molar ratio of 1:4:1:0.2:1:2; separately weigh out 0.1237g of boric acid (H3BO3) as a boron source; add the above raw materials to a three-necked flask containing 5ml of oleylamine and 10ml of octadecene, and ultrasonically disperse for 30min to form a homogeneous mixed solution;

[0038] Step 2: The mixed solution was heated to 280°C at a rate of 7°C / min and kept at this temperature for 1.5 h. After the reaction was completed, 20 ml of heptane was added for dilution, the precipitate was collected by centrifugation, and the precipitate was washed three times with heptane and dried under vacuum at 60°C for 18 h to obtain the precursor powder.

[0039] Step 3: Place the precursor powder in a tube furnace, heat it to 400 °C in air at a rate of 2 °C / min, anneal for 2 h, and then cool it naturally to obtain a black powdery boron-doped high-entropy catalyst (denoted as HEO-B1).

[0040] Transmission electron microscopy (TEM) was used to characterize the morphology and structure of HEO-B1 in detail. Test images are shown (see...). Figure 1The catalyst particles are nanoscale flakes, exhibiting slight agglomeration but good overall dispersion. Their high specific surface area helps expose numerous active sites, thereby enhancing catalytic activity. Furthermore, the observed lattice fringe bending indicates localized lattice distortion, primarily attributed to the multi-element solid solution effect of Fe, Co, Ni, Cr, and V in the high-entropy alloy, where the atomic radii differ by up to 12%. Despite this, the overall morphology of the catalyst remains uniform, with no significant phase separation observed. X-ray diffraction (XRD, see...) Figure 2 The test results show that the diffraction peaks correspond to the oxides of Fe, Co, and Ni, but no characteristic diffraction peaks of borides were detected. This confirms that boron doping did not form borides, and further verifies the structural characteristics of high-entropy oxides.

[0041] X-ray photoelectron spectroscopy (XPS, see...) Figure 3 Analysis confirmed the presence of boron doping. Test results showed that the binding energy of the B 1s peak was 191.2 eV, falling between boron oxide (B₂O₃, 192-193 eV) and metal borides (such as NiB, 188.5 eV), indicating that boron exists in the catalyst in a partially oxidized solid solution state, forming a BOM (M is a metal) bonding mode.

[0042] For each transition metal element, its 2p 3 / 2 The peak position and oxidation state show a clear correspondence. Taking iron (Fe) as an example, Fe... 3+ The binding energy is located in the range of 710.5-712.0 eV, mainly corresponding to high-valence oxides, such as Fe2O3 and FeOOH; Fe 2+ The binding energy ranges from 708.0 to 709.5 eV, and is typically associated with FeO or partially oxidized Fe3O4 (magnetite). 3+ and Fe 2+ The coexistence of these elements creates a mixed valence state, which is beneficial for optimizing active sites. Fe 3+ As an active site for the anodic oxygen evolution reaction, it participates in the adsorption process of *OH → *O, while Fe 2+ Then through Fe 2+ ↔ Fe 3+ Cobalt (Co) maintains its charge balance through redox cycles. 3+ The binding energy is 780.5-782.0 eV, and it mainly exists in hydroxyl oxides (CoOOH) or spinel-structured Co3O4; Co 2+ The binding energy is between 778.5 and 780.0 eV, corresponding to low-valence phases such as CoO or Co(OH)2. 3+ and Co 2+ The dynamic balance between them plays a crucial role in the OER process.3+ Partially reduced to Co 2+ This facilitates the formation of CoOOH / CoO heterojunctions, thereby effectively lowering the energy barrier for OOH formation. Ni (Ni) 3+ The binding energy ranges from 855.5 to 857.0 eV, manifesting as high-valence compounds such as NiOOH or Ni₂O₃; Ni 2+ The binding energy is 853.5-855.0 eV, which is related to NiO or Ni(OH)2. 3+ Stabilization is achieved through charge transfer via the BO-Ni bond (B→O→Ni), thereby enhancing the structural stability of the catalyst. Vanadium (V) 4+ The binding energy is located in the range of 515.5-517.0 eV, clearly pointing to the VO2 phase, which may be a rutile or monoclinic phase structure. 4+ The d¹ electronic state of chromium readily hybridizes with the O 2p orbital, leading to a decrease in the formation energy of oxygen vacancies and thus increasing the density of active sites. (Cr in chromium) 3+ The binding energy is 576.0-577.5 eV, corresponding to stable oxides (Cr₂O₃) or hydroxides (Cr(OH)₃); while Cr 2+ The binding energy range is 574.0-575.5 eV, indicating that B doping may have created a localized reducing environment, but Cr... 2+ Easily oxidized to Cr 3+ This can potentially cause structural stress.

[0043] Overall, boron-doped high-entropy oxide catalysts significantly improve anodic catalytic activity and stability through the synergistic effect of the valence states of various metal elements, providing strong support for the commercial application of alkaline electrolyzer technology.

[0044] Catalytic slurry preparation and coating:

[0045] Take 5 mg of the boron-doped high-entropy catalyst and mix it with 0.25 g of Form B ionomer. Add a dispersant consisting of 5 ml of deionized water and 5 ml of isopropanol. Disperse the mixture at room temperature for 1 h to obtain a uniform slurry with a solid content of 24.5%.

[0046] A material with a thickness of 0.2 mm and an area of ​​2 cm² 2 The nickel felt substrate was preheated to 90℃ and sprayed using a high-pressure gas-assisted spraying device (nozzle diameter 0.3mm, pressure 0.4MPa). The spraying distance was 10cm, and the process was repeated multiple times, controlling the catalyst loading at 1.0mg / cm³. 2 After the spraying process is completed, the resulting composite high-entropy anode has a uniform coating, as shown in the physical example below. Figure 6 As shown.

[0047] Example 2: A method for fabricating a boron-doped high-entropy electrolytic cell anode:

[0048] Preparation of boron-doped high-entropy catalysts:

[0049] Step 1: Weigh out 0.353g of iron acetylacetone (Fe(acac)3), 1.028g of cobalt acetylacetone (Co(acac)3), 0.257g of nickel acetylacetone (Ni(acac)2), 0.069g of vanadium acetylacetone (V(acac)2), and 0.349g of chromium acetylacetone (Cr(acac)3) in a molar ratio of 1:4:1:0.2:1:2; separately weigh out 0.1237g of boric acid (H3BO3) as a boron source; add the above raw materials to a three-necked flask containing 5ml of oleylamine and 10ml of octadecene, and ultrasonically disperse for 30min to form a homogeneous mixed solution;

[0050] Step 2: The mixed solution was heated to 250°C at a rate of 7°C / min and kept at this temperature for 2 hours. After the reaction was completed, 20 ml of heptane was added for dilution, the precipitate was collected by centrifugation, and the precipitate was washed three times with heptane and dried under vacuum at 60°C for 12 hours to obtain the precursor powder.

[0051] Step 3: Place the precursor powder in a tube furnace, heat it to 350 °C in air at a rate of 2 °C / min, anneal for 1.8 h, and then allow it to cool naturally to obtain a black powdery boron-doped high-entropy catalyst.

[0052] Catalytic slurry preparation and coating:

[0053] Take 5 mg of the boron-doped high-entropy catalyst and mix it with 0.25 g of Form B ionomer. Add a dispersant consisting of 5 ml of deionized water and 5 ml of ethanol. Disperse the mixture at room temperature for 1 h to obtain a uniform slurry with a solid content of 20%.

[0054] A material with a thickness of 0.1 mm and an area of ​​4 cm² 2 The nickel felt substrate was preheated to 60°C and sprayed using a high-pressure gas-assisted spraying device (nozzle diameter 0.3 mm, pressure 0.4 MPa). The spraying distance was 10 cm, and the process was repeated multiple times to control the catalyst loading at 0.8 mg / cm³. 2 Thus, a composite high-entropy anode was obtained.

[0055] Example 3: A method for fabricating a boron-doped high-entropy electrolytic cell anode:

[0056] Preparation of boron-doped high-entropy catalysts:

[0057] Step 1: Weigh out 0.353g of iron acetylacetone (Fe(acac)3), 1.028g of cobalt acetylacetone (Co(acac)3), 0.257g of nickel acetylacetone (Ni(acac)2), 0.069g of vanadium acetylacetone (V(acac)2), and 0.349g of chromium acetylacetone (Cr(acac)3) in a molar ratio of 1:4:1:0.2:1:2; separately weigh out 0.1237g of boric acid (H3BO3) as a boron source; add the above raw materials to a three-necked flask containing 5ml of oleylamine and 10ml of octadecene, and ultrasonically disperse for 30min to form a homogeneous mixed solution;

[0058] Step 2: The mixed solution was heated to 270°C at a rate of 7°C / min and kept at this temperature for 1 hour. After the reaction was completed, 20 ml of heptane was added for dilution, the precipitate was collected by centrifugation, and the precipitate was washed three times with heptane and dried under vacuum at 60°C for 24 hours to obtain the precursor powder.

[0059] Step 3: Place the precursor powder in a tube furnace, heat it to 450 °C in air at a rate of 2 °C / min, anneal for 1.5 h, and then allow it to cool naturally to obtain a black powdery boron-doped high-entropy catalyst.

[0060] Catalytic slurry preparation and coating:

[0061] Take 5 mg of the boron-doped high-entropy catalyst and mix it with 0.25 g of Form B ionomer (sulfonated polyether ether ketone, sulfonation degree 35%). Add a dispersant consisting of 5 ml of ethanol and 5 ml of isopropanol and ultrasonically disperse at room temperature for 1 h to obtain a uniform slurry with a solid content of 30%.

[0062] A nickel felt substrate with a thickness of 0.3 mm and an area of ​​1 cm² was preheated to 80°C and sprayed using a high-pressure gas-assisted spraying device (nozzle diameter of 0.3 mm and pressure of 0.4 MPa). The spraying distance was 10 cm, and the process was repeated multiple times. The catalyst loading was controlled to be 1.2 mg / cm², resulting in a composite high-entropy anode.

[0063] Comparative Example 1: Scale-up preparation of boron-doped high-entropy catalyst: The difference from Example 1 is that the mass of iron acetylacetone (Fe(acac)3), cobalt acetylacetone (Co(acac)3), nickel acetylacetone (Ni(acac)3), vanadium acetylacetone (V(acac)2), chromium acetylacetone (Cr(acac)3), and boric acid (H3BO3) is twice that of Example 1, while the amount of oleylamine is 7 ml and the amount of octadecene is 14 ml. Finally, a black powdery boron-doped high-entropy catalyst (denoted as HEO-B2) is obtained.

[0064] The single-anode performance test of the obtained HEO-B2 (see) Figure 7 ) and performance testing after assembling it as an anode into an electrolytic cell (seeFigure 8 The results show that its performance is highly consistent with that of HEO-B1.

[0065] Comparative Example 2: Scale-up preparation of boron-doped high-entropy catalyst: The difference from Example 1 is that the mass of iron acetylacetone (Fe(acac)3), cobalt acetylacetone (Co(acac)3), nickel acetylacetone (Ni(acac)2), vanadium acetylacetone (V(acac)2), chromium acetylacetone (Cr(acac)3), and boric acid (H3BO3) is 3 times that of Example 1. At the same time, oleylamine is 10 ml and octadecene is 20 ml. Finally, a black powdery boron-doped high-entropy catalyst (denoted as HEO-B3) is obtained.

[0066] The single-anode performance test of the obtained HEO-B3 (see) Figure 7 ) and performance testing after assembling it as an anode into an electrolytic cell (see Figure 8 The results show that its performance is highly consistent with that of HEO-B1.

[0067] Comparative Example 3: Scale-up preparation of boron-doped high-entropy catalyst: The difference from Example 1 is that the mass of iron acetylacetone (Fe(acac)3), cobalt acetylacetone (Co(acac)3), nickel acetylacetone (Ni(acac)2), vanadium acetylacetone (V(acac)2), chromium acetylacetone (Cr(acac)3), and boric acid (H3BO3) is 5 times that of Example 1, while the amount of oleylamine is 13 ml and the amount of octadecene is 26 ml. Finally, a black powdery boron-doped high-entropy catalyst (denoted as HEO-B5) was obtained.

[0068] The single-anode performance test of the obtained HEO-B5 (see) Figure 7 ) and performance testing after assembling it as an anode into an electrolytic cell (see Figure 8 The results show that its performance is highly consistent with that of HEO-B1.

[0069] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent solutions made using the contents of the present invention specification, whether directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of the present invention.

Claims

1. A method for fabricating a boron-doped high-entropy electrolytic cell anode, characterized in that, include: Boron-doped high-entropy catalysts are synthesized in one step via solvothermal synthesis using metal salts containing five transition metal elements (iron, cobalt, nickel, vanadium, and chromium) and a boron source. The boron-doped high-entropy catalyst was formulated into a slurry with a binder and a dispersant, and then uniformly coated onto the surface of a nickel felt substrate using a high-pressure gas-assisted spraying process. After constant-temperature drying, a dense catalyst layer was formed, and finally a composite high-entropy anode was obtained. The boron-doped high-entropy catalyst is prepared through the following steps: Step 1: Iron salt, cobalt salt, nickel salt, vanadium salt, chromium salt and boric acid in a fixed molar ratio are uniformly dispersed in a mixed solvent of oleylamine and octadecene to obtain a mixed solution; the molar ratio of iron salt, cobalt salt, nickel salt, vanadium salt, chromium salt and boric acid is 1:4:1:0.2:1:2; the volume ratio of oleylamine and octadecene is 1:

2. Step 2: After the mixed solution is heated by a program, the sample is washed with heptane and vacuum dried to obtain the precursor powder; Step 3: Anneal the precursor powder in air to obtain a boron-doped high-entropy catalyst.

2. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1, characterized in that, The nickel felt substrate has a thickness of 0.1-0.3 mm and an area of ​​1-4 cm². 2 .

3. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1 or 2, characterized in that, The adhesive is Form B ionomer, which is a sulfonated polyether ether ketone with a sulfonation degree of 35%, and the mass percentage of Form B ionomer in the slurry is 20-30%.

4. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1 or 2, characterized in that, The dispersant is at least one of deionized water, ethanol, and isopropanol.

5. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1 or 2, characterized in that, The loading of the boron-doped high-entropy catalyst is 0.8-1.2 mg / cm³. 2 .

6. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1 or 2, characterized in that, The constant temperature drying temperature is 60-90℃.

7. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1 or 2, characterized in that, In the spraying process, the nozzle diameter of the spraying equipment is 0.3 mm and the pressure is 0.4 MPa.

8. The method for fabricating the anode of a boron-doped high-entropy electrolytic cell as described in claim 1, characterized in that, The temperature of the heat treatment process is 250-280℃, and the holding time is 1-2 hours; the vacuum drying time is 12-24 hours; the annealing temperature is 350-450℃, and the time is 1.5-2 hours.

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